Question

Which characteristics of a graph tell you that it represents a proportional relationship?

Answer 1

Answer:

Any line passing through the origin represents a proportional relationship

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

therefore

Any line passing through the origin represents a proportional relationship

Answer 2

Answer:

A line passing through the origin and that is a straight line  represents a proportional relationship

Step-by-step explanation:

Answer 3

You can tell a graph is proportional if the points form a single line and that line passes through the origin. The relationship between input and output figures will also remain the same throughout.